National Forest Inventory, 2013
Brazil, 2013
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BRA_2013_NFI_v01_EN_M_v01_A_OCS
National Forest Inventory, 2013
| Name | Country code |
|---|---|
| Brazil | BRA |
A sample unit is re-measured every 5 years.
The national forest inventory (NFI) is an action coordinated by the Brazilian Forest Service, which aims at the production of strategic information on forest resources in the country. The NFI is based on the collection of data in sample units distributed every 20 km throughout the Brazilian territory - or in shorter distances, depending on the specific interest of each region. Each sample unit must be visited by a trained team, which collects data on forest resources, such as diameter and height of the trees, collection of botanical material and soil samples, biological diversity, health and vitality of forests, stock. In addition, social-environmental functions are investigated through interviews with residents of the rural environment, allowing us to know about the uses of products and services of forests and their contribution to the family income.
Maltese cross-shaped conglomerate
Plants
Scope
Biological diversity of forest resources;
Forest health and vitality;
Forest stocks;
Social and environmental functions of forests;
Use of products and services from forests;
Contribution of forest products to family income;
Knowledge about environmental agencies and public policies;
Engagement in the protection and conservation of forests;
Perceptions about climate change.
| Topic |
|---|
| Forest study, environmental study, forest inventory, biomass and carbon stock, and socio-environmental study of forest uses. |
Coverage
Communites living near forests and people that potentially use forest resources.
Producers and sponsors
| Name |
|---|
| Brazilian Forest Service |
| Name | Role |
|---|---|
| Brazilian Agricultural Research Corporation | staff training, technical consults for creating and improving the NFI methodologies, soil samples storage |
| Name |
|---|
| Global Environment Facility |
| Brazilian Federal Government |
| Inter-American Development Bank |
Sampling
The NFI standard grid consists of points equidistant at 20 km, called the 20 km x 20 km national standard grid. The densification of the grid may be necessary for special applications, e.g., in Brazil's protected areas, as a National Forest. These densifications can be 10 km x 10 km (level 2), 5 km x 5 km (level 3), and so on until 0,625 km x 0,625 km (level 6).
A conglomerate is installed on each point of the National Grid of Sampling Points (GNPA). The conglomerate is shaped like the Maltese Cross, consisting of four rectangular subunits of fixed area, perpendicularly positioned and oriented towards the cardinal points and numbered from 1 to 4.
The size of the subunit is related to the characteristics of existing forests in Brazilian biomes. The Biomes 'Atlantic Forest', 'Cerrado', 'Caatinga', 'Pantanal' and 'Pampas' present subunits of ??1,000 m² (20 m x 50 m); The Biome Amazon present subunits of 2,000 m² (20 m x 100 m). Each of these sub-units is subdivided into 10 m x 10 m subplots.
The interviews is carried out with residents living near the conglomerates. Up to four interviews is conducted within a radius of 10 km from the central point of the conglomerate.
Weights are not applied.
Data collection
| Start |
|---|
| 2013 |
Data Access
| Is signing of a confidentiality declaration required? | Confidentiality declaration text |
|---|---|
| yes | See https://snif.florestal.gov.br/en/accessibility |
SERVIÇO FLORESTAL BRASILEIRO (SFB). Inventário Florestal Nacional – IFN. Brasília, 2021. Disponível em:< http://snif.florestal.gov.br/pt-br/inventario-florestal-nacional-ifn>. Acesso em: dd mmm. ano.
Disclaimer and copyrights
The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses
Contacts
| Name | |
|---|---|
| Humberto Navarro | [email protected] |
| Tiago Thomazi | [email protected] |
Metadata production
DDI_BRA_2013_NFI_v01_EN_M_v01_A_OCS_FAO
| Name | Affiliation | Role |
|---|---|---|
| Office of Chief Statistician | Food and Agriculture Organization | Metadata adapted for FAM |
| Javier GarciaPerez | Food and Agriculture Organization | Metadata producer |